Ch. 43 Venipuncture Equipment & Order of Draw

Tube Holders

Clears, plastic disposable cylinder with a small threaded opening at one end needle insertion and wide opening at the other end for tube exchange

Safety feature

Device that covers needle immediately after use to prevent injury and protect against blood bourse pathogen transmission

Gauge

Diameter or size of the needle opening

Lumen

Internal, hollow space of a needle

Topic Anesthetics

Local anesthetic that prevents nerves from transmitting painful impulses. Primarily utilized with pediatric patients. EMLA(Eutectic Mixture of Local Anesthetic)-mixture of lidocaine and primo ain't ointment/cream

22G Black

Multi-sample needle used for Venipuncture; common in practice when very few tubes are required or children

Needle Types

Multi-sample needles: Used with ETS & most common type of needles used for Venipuncture Butterfly needles(winged-infusion set): Used with ETS or syringe system. Primarily used for small, fragile, veins, hand veins, difficult veins or veins of elderly and pediatric patients since the tubing allowing for more flexibility and precision Hypodermic needles: Used for syringe system. Sometimes used for small, difficult veins that have a tendency to collapse

OSHA Regulations

Needles WITHOUT safety features MUST be used with tube holders of syringes that have safety features

25G Dark blue

Rarely used for pediatric veins because of high risk of hemolysis

Tourniquet

Restricts blood flow to distend/inflate veins Types: Vinyl(latex free) strap Blood Pressure cuff (maintain cuff pressure below 40mmHg or below patient's diastolic pressure? Velcro strap

Rubber sheath

Retractable sheath covering the needle that punctures tubes to prevent blood from leaking between tube exchange

23G Light blue

Routine butterfly needle used for small, fragile, hand or difficult veins

21G Green

Routine/most common multi-sample needle used for Venipuncture. LARGEST

Size of Gauge

Size and condition of the vein determines needle gauge used on a patient (commonly used needles in phlebotomy: 21G-23G) The lower the number (#) the higher the gauge, diameter of the bevel size

Bevel

Slanted tip of a needle; must always face up

Evacuated Tubes

Tubes with vacuum used to collect blood

Blood Collection Equipment Evacuated Tube System (ETS) Equipment

Vacuum that aid in blood collection